Abdullah bin Omar said that our Holy Prophet (SAW) said:
“One who helps someone in his need, Allah helps him in his work, and one who removes any worry or trouble of any Muslim. Allah, in return, removes anyone of his worries on the Day of Judgment”. (Abu Dawud)

The Prophet (SAW) said If a Muslim is being insulted and degraded and
his honor somewhere and mother Muslim leaves him helpless, Allah would leave the latter helpless on
occasions when he would need help. And if any Muslim helps him in when he is insulted and degraded,
Allah shall help him when he would need help”
(Abu Da’ud: Adab)